package com.demo.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

/**
 * @author hxg
 * @version 1.0
 * @date 2021/12/28 16:40
 */
@Service
public class PaymentService {
    public String paymentInfoSuccess(Long id){
        return "threadPool:" + Thread.currentThread().getName() + "=success=" + id;
    }

    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),
            // 请求次数
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),
            // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),
            // 失败率达到多少后跳闸
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if(id < 0) {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数  id: " +id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfoFailHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value="5000")
    })
    public String paymentInfoFail(Long id){
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "threadPool:" + Thread.currentThread().getName() + "=fail=" + id;
    }

    public String paymentInfoFailHandler(Long id){
        return "threadPool:" + Thread.currentThread().getName() + "=系统繁忙--failHandler=" + id;
    }
}
